Shimano Ultegra CS-R8101 12-Speed Cassette 2026 size 11-34T | Aluminum

evo.com | Shimano Cassettes > The Shimano Ultegra CS-R8101 12-Speed Cassette delivers smooth, precise shifting with a refined gear range for everything from all-out sprints to grueling climbs. Designed with Hyperglide+ technology, it ensures seamless transitions between gears, keeping your cadence dialed and your power steady. Lightweight, durable, and race-ready, this cassette is built to take your road performance to the next level. 11-34T 11-12-13-14-15-17-19-21-24-27-30-34T Compatible with New 12-Speed and Road 11-Speed Freehub Body HG spline L2 ROAD 12-speed dedicated Hyperglide + Shift under load, up or down. Precise and beefy, this cassette shifts every dang time. Aluminum Spider Arms | Shimano Ultegra CS-R8101 12-Speed Cassette 2026 - 11-34T | Aluminum